1 GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
2 # Local preconfigure fragment for sysdeps/arm
6 # If the compiler enables unwind tables by default, this causes
7 # problems with undefined symbols in -nostdlib link tests. To
8 # avoid this, add -fno-unwind-tables here and remove it in
9 # sysdeps/arm/configure.ac after those tests have been run.
10 if test "${CFLAGS+set}" != "set"; then
13 CFLAGS="$CFLAGS -fno-unwind-tables"
16 # Lets ask the compiler which ARM family we've got
17 # Unfortunately it doesn't define any flags for implementations
18 # that you might pass to -mcpu or -mtune
19 # Note if you add patterns here you must ensure that
20 # an appropriate directory exists in sysdeps/arm
21 archcppflag=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
22 sed -n 's/^#define \(__ARM_ARCH_[0-9].*__\) .*$/\1/p'`
24 case "x$archcppflag" in
27 AC_MSG_NOTICE([Found compiler is configured for something newer than v7 - using v7])
32 AC_MSG_NOTICE([Found compiler is configured for $machine])
37 AC_MSG_NOTICE([Found compiler is configured for $machine])
41 AC_MSG_NOTICE([Found compiler is configured for $machine])
45 AC_MSG_WARN([arm/preconfigure: Did not find ARM architecture type; using default])
49 AC_EGREP_CPP(yes,[#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
52 ], endianness=le, endianness=be)
54 machine=arm/$endianness/$machine
55 with_fp_cond="!defined __SOFTFP__"